"of workholding chucks used primarily in turning operations. Chuck (engineering) A chuck is a specialized type of clamp used to hold an object with radial symmetry, especially a cylinder. In drills and mills it holds the rotating tool whereas in lathes it holds the rotating workpiece. On a lathe the chuck is mounted on the spindle which rotates within the headstock. For some purposes (such as drilling) an additional chuck may be mounted on the non-rotating tailstock. Many chucks have jaws, (sometimes called dogs) that are arranged in a radially symmetrical pattern like the points of a star. The jaws"
"Clamp (tool) A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. In the United Kingdom and Australia, the term cramp is often used instead when the tool is for temporary use for positioning components during construction and woodworking; thus a G cramp or a sash cramp but a wheel clamp or a surgical clamp. There are many types of clamps available for many different purposes. Some are temporary, as used to position components while fixing them together, others are intended to be permanent. In"
"clamp holder positioning the apparatus at a 90° angle. Clamp holders can secure laboratory equipment at specific angles, diameters, and weights, as required. Clamp holders are often used to hold the attached apparatus over a work surface. There are several different types of holders, such as swivel holders and all-position holders, that allow adjustments for different angles and planes. In some cases it can be used to attach support rods together. Clamp holder A clamp holder or clamp fastener is a piece of laboratory apparatus that is used to secure laboratory clamps, such as extension-type utility clamps, or other attachments"
"and removed from the ring from the side rather than from above, a safer procedure. Iron ring (laboratory) A Ring clamp is an item of laboratory equipment which comprises a conjoined metal ring and radially-extending rod. In some cases, the rod terminates in a screw clamp for attachment to a retort stand or other support; in others, the rod may be attached to a stand by means of a laboratory clamp holder. Iron rings are commonly used in chemistry laboratories for supporting apparatus above the work surface, for example: In some cases, a slot is cut in the side of"
"Mitre clamp Mitre clamps are designed to hold mitre joints together. The earliest mitre clamps are a simple spring in a C-shape with sharpened points that are sprung onto the outside corner of the mitre joint. The right angled plates are higher than the screws and the red holder. The screws go under the frame (work-piece) to be held, and the red bit clamps down on the lower-edge of the frame. Recent designs are more complicated; a rigid body holds one fixed and one moveable jaw activated by a cam. Examples of the newer clamps are Jim Chestnut's ""Clam Clamp"""
"Clamp holder A clamp holder or clamp fastener is a piece of laboratory apparatus that is used to secure laboratory clamps, such as extension-type utility clamps, or other attachments to a ring stand or lab frame. The material can be made up of brass, cast iron, stainless steel, aluminium or nickel-plated zinc. A ring-stand rod and clamp are inserted into two jaws of a clamp holder and adjustable thumbscrews fasten the clamp holder to the attachments and lock it in place. The attachments can be secured with the thumbscrews to be positioned at any height or angle, with a regular"
"Grapple fixture Grapple fixtures are used on spacecraft or other objects to provide a secure connection for a robotic arm. The fixtures allowed the Space Shuttle's Canadarm (also known as the Shuttle Remote Manipulator System, or SRMS) to safely grapple large objects (eg. ISS components, or satellites eg HST). They currently do the same for the International Space Station's Space Station Remote Manipulator System (SSRMS) (also known as Canadarm2) and the Japanese Experiment Module Remote Manipulator System (JEMRMS). The grapple fixtures are flat in appearance, with a central grapple pin topped with a sphere which the snares in the end"
"Iron ring (laboratory) A Ring clamp is an item of laboratory equipment which comprises a conjoined metal ring and radially-extending rod. In some cases, the rod terminates in a screw clamp for attachment to a retort stand or other support; in others, the rod may be attached to a stand by means of a laboratory clamp holder. Iron rings are commonly used in chemistry laboratories for supporting apparatus above the work surface, for example: In some cases, a slot is cut in the side of the ring opposite the rod. This is to allow a funnel to be placed upon"
"uses a screw to clamp down the pipe, and the chain style uses a chain for securing the pipe. Clamp-on vises are basically very light-duty bench vises. They usually have smooth jaws for wood, plastic and light metalworking, but some have serrated jaws for getting a better grip on metal. Some unique vises combine these features in a rotating design. They also help to secure an object while working on the object. Vises that combine the functions of a pipe vise with a metalworker's vise do exist, and are quite common. Some vises have a rotating design to provide both"
"and the Maestro Mitre Clamp. Mitre clamp Mitre clamps are designed to hold mitre joints together. The earliest mitre clamps are a simple spring in a C-shape with sharpened points that are sprung onto the outside corner of the mitre joint. The right angled plates are higher than the screws and the red holder. The screws go under the frame (work-piece) to be held, and the red bit clamps down on the lower-edge of the frame. Recent designs are more complicated; a rigid body holds one fixed and one moveable jaw activated by a cam. Examples of the newer clamps"
"to change where a fixture is pointing during a show. C-Clamps are hook clamps that use a threaded bolt to attach to a pipe or batten and to hold the instrument secure. Once secured, the fixture can be panned and tilted using adjustment knobs on the yoke and clamp. In addition, safety cables (a loop of aircraft cable terminated with carabiners) are used to support the lighting instrument in case the clamp fails. A side arm is a metal pole bolted to the instrument with a clamp on the end. This enables the instrument to be hung to the side"
"C-clamp A C-clamp or G-clamp is a type of clamp device typically used to hold a wood or metal workpiece, and often used in, but are not limited to, carpentry and welding. Often believed that these clamps are called ""C"" clamps because of their C-shaped frame, or also often called C-clamps or G-clamps because including the screw part they are shaped like a lowercase letter g, but in fact they were originally called a carriage makers clamp, or Carriage Clamp. C-clamps or G-clamps are typically made of steel or cast iron, though smaller clamps may be made of pot metal."
"Marman clamp A Marman clamp is a type of heavy-duty band clamp; it allows two flat cylindrical interfaces to be simply clamped together with a ring clamp. It is sometimes also known as a ""Marman ring"". A common use for Marman clamps is as quick-disconnect connectors in flexible aircraft fuel lines. Marman clamps are used extensively in spaceflight systems and are common mechanical load-transfer and clamping mechanisms for connecting the upper stage and the satellite payload of space vehicles, for example, on the Cassini Plasma Spectrometer on the Cassini orbiter. They may also be used to join stages of a"
"Riser clamp A Riser clamp is a type of hardware used by mechanical building trades for pipe support in vertical runs of piping (risers) at each floor level. The devices are placed around the pipe and integral fasteners are then tightened to clamp them onto the pipe. The friction between the pipe and riser transfers the weight of the pipe through the riser to the building structure. Risers are generally located at floor penetrations, particularly for continuous floor slabs such as concrete. They may also be located at some other interval as dictated by local building codes or at intermediate"
"lighting designers prefer. LED fixtures are making a positive impact on the lighting market, and are becoming more popular when compared to the energy usage of current incandescent, halogen, and discharge sources. Most instruments are suspended or supported by a ""U"" shaped ""yoke"", or 'trunnion arm' fixed to the sides of the instrument, normally near its center of gravity. On the end of such, a clamp (known as a hook-clamp, C-clamp, or pipe clamp—pipe referring to battens) is normally fixed, made in a ""C"" configuration with a screw to lock the instrument onto the pipe or batten from which it"
"allows the scrap wood to receive the damage from the clamping, while dispersing the clamping force across the piece of scrap wood into the clamped objects. Deep-throated clamps are also available and provide greater reach for smaller jobs. "" see C-Clamp (stagecraft) C-clamps are frequently used to hang stage lighting instruments. C-clamp A C-clamp or G-clamp is a type of clamp device typically used to hold a wood or metal workpiece, and often used in, but are not limited to, carpentry and welding. Often believed that these clamps are called ""C"" clamps because of their C-shaped frame, or also often"
"to the floor, with a provision to adjust the spacing of the bottom of the leg, to keep the clamping surfaces of the jaws approximately parallel, even though the work to be clamped may be of various thicknesses. An engineer's vise, also known as a ""metalworking vise"" or ""machinist's vise"", is used to clamp metal instead of wood. It is used to hold metal when filing or cutting. It is sometimes made of cast steel or malleable cast iron, but most are made of cast iron. However, most heavy duty vises are 55,000 psi cast steel or 65,000 psi ductile"
"Circlip A circlip (a portmanteau of ""circle"" and ""clip""), also known as a C-clip, Seeger ring, snap ring or Jesus clip, is a type of fastener or retaining ring consisting of a semi-flexible metal ring with open ends which can be snapped into place, into a machined groove on a dowel pin or other part to permit rotation but to prevent lateral movement. There are two basic types: internal and external, referring to whether they are fitted into a bore or over a shaft. Circlips are often used to secure pinned connections. When used to retain piston wrist pins or"
"Band clamp A band clamp is a generic term for a holding device usually consisting of a strap of metal or cloth formed into a loop, with a mechanism to forcibly adjust the diameter, thereby exerting a squeezing force on an object within the loop. One type of band clamp known as a web clamp has a band usually made of nylon type cloth webbing. It can slip and stretch around irregularly shaped objects such as frames, packages, skids or even trailer loads. Clamping pressure is applied either through a mechanical method such as a screw or ratchet mechanism that"
"amounts of power. A short length of hose is clipped between two shafts where vibration or variations in alignment may be taken up by the flexibility of the hose. This technique is well adapted to use for mock-ups in a development laboratory. This type of clamp was marketed in 1921 by ex Royal Navy Commander, Lumley Robinson, who founded L. Robinson & Co (Gillingham) Ltd., a business in Gillingham, Kent. The company owns the trademark for Jubilee Clip. A similar type of clamp to the screw band, also with a solid screw, is the Marman clamp. Spring clamps are typically"
"Crank (mechanism) A crank is an arm attached at a right angle to a rotating shaft by which reciprocating motion is imparted to or received from the shaft. It is used to convert circular motion into reciprocating motion, or vice versa. The arm may be a bent portion of the shaft, or a separate arm or disk attached to it. Attached to the end of the crank by a pivot is a rod, usually called a connecting rod (conrod). The end of the rod attached to the crank moves in a circular motion, while the other end is usually constrained"
"Retort stand A retort stand, sometimes called a clamp stand or a ring stand, is a piece of scientific equipment, to which clamps can be attached to hold other pieces of equipment. For instance, burettes, commonly used for titration experiments, test tubes and flasks. The retort stand a general piece of lab equipment that can be used to help with holding other pieces pf equipment and glassware. Furthermore, pieces of metalware such as ring clamps, versatile clamps, 3-prong clamps, and burette clamps can be attached to retort stands to better hold certain types of glassware.. The basic retort stand consists"
"Hold down (structural engineering) Holdown (hold-down, hold down) or tie-down in structural engineering refers to the steel device or hardware that is installed at the end of a plywood shear wall. The holdowns provide uplift resistance against the overturning moment imposed on the wall due to ""in-plane"" lateral load applied at the top of the wall. A hold-down may also refer to clamping device used to anchor a pipe to a structural steel element or concrete floor or allow movement of the pipe in an axial direction. At the bottom, the holdown is connected to the concrete foundation or structural"
"Carabiner A carabiner () or karabiner is a specialized type of shackle, a metal loop with a spring-loaded gate used to quickly and reversibly connect components, most notably in safety-critical systems. The word is a shortened form of ""Karabinerhaken"" (or also short ""Karabiner""), a German phrase for a ""spring hook"" used by a carbine rifleman, or carabinier, to attach items to a belt or bandolier. Carabiners, often called D-Rings by military professionals, are widely used in rope-intensive activities such as climbing, arboriculture, caving, sailing, hot air ballooning, rope rescue, construction, industrial rope work, window cleaning, whitewater rescue, and acrobatics. They"
"tightened. F-clamps are adjustable which allows for them to be used on larger scale objects without the need for a large screw. An F-clamp is also a simple mechanical device used for lifting engine or transmission parts. The clamp has an adjusting screw to tighten onto the part and a lifting ring to attach a hoist cable. F-clamps in the industry terminology have the jaws mounted on a flat bar, while a pipe clamp, which has the same construction, is mounted on a pipe, normally of 1/2"" or 3/4"" diameter. F-clamp An F-clamp, also known as a bar clamp or"
"in construction. The locked tip holder consists of a needle, for the centre of the radius, and the other holds either a lead clutch, or an inking nib. There are older variants which use a wooden beam. Another similar type is a Machinist or Engineers beam compass, which uses scribing points only, similar to ones used by woodworkers, except that its fine adjustment is generally more refined. These beam compasses can be extended by adding press-in rods, or by using a lockable rod connector. Trammels or trammel points are the sockets or cursors that, together with the beam, make up"
"rotate about an axis. Gimbals are typically nested one within another to accommodate rotation about multiple axes. They appear in gyroscopes and in inertial measurement units to allow the inner gimbal's orientation to remain fixed while the outer gimbal suspension assumes any orientation. In compasses and flywheel energy storage mechanisms they allow objects to remain upright. They are used to orient thrusters on rockets. Some coordinate systems in mathematics behave as if there were real gimbals used to measure the angles, notably Euler angles. For cases of three or fewer nested gimbals, gimbal lock inevitably occurs at some point in"
"Radium release hitch A radium release hitch is a load-releasing hitch using 3:1 mechanical advantage which is used in a two-rope technical rescue system. The Radium Release Hitch allows a load to be transferred from one rope to another and is commonly rigged into the belay line prior to the operation of a two-rope technical rescue system. A radium release hitch is typically tied with 10 meters of 8mm rope and two locking carabiners. A reasonable length for the hitch (distance between the 2 carabiners) is 10 to 15 cm. The Radium Release Hitch was developed by Kirk Mauthner (who"
"can easily dimple or ""drill"" into the batten seriously compromising the strength of the batten. Film and television grips commonly make use of c-clamps that are manufactured specifically for their industry. These clamps are produced with integrated studs designed to accept the mounting hardware from a variety of small, lightweight lighting fixtures, allowing illumination to be placed in unusual or awkward locations quickly and easily. C-clamps are commonly used in theatrical carpentry for the same purpose that non-theatrical carpenters employ them: for creating a quick, temporary, and non-destructive way of joining two objects together. Legs are commonly attached to platforms"
"have either two or four screws on top of the scope ring that hold the scope in place. Both the Weaver and Picatinny clamp systems have a screw side and a clamp side. With the two-screw style, the ring usually aligns well but does not have the strength of the four screw system. Many times, when tightening the screws of the four screw type, the scope can twist in place, causing misalignment. Tightening the mounts in an “X” pattern and usually starting opposite of the outside clamp side; holding the scope slightly to the opposite side while tightening the screws"
"locks"" today. Yale's best-known lock design, the cylinder pin-tumbler lock, utilized a key-operated lock concept first conceived in ancient Egypt over 4,000 years ago. Yale's inventions were so successful and received such critical acclaim that he exhibited several of his lock designs at world's fairs in the United States and overseas, winning a number of awards at these exhibitions. Throughout his career Yale acquired many patents, mostly related to his inventions of locks and safes, but also including mechanical problems. In 1858, he patented a device for adjusting at a right angle the joiners' square. In 1865 he patented a"
"Gimbal A gimbal is a pivoted support that allows the rotation of an object about a single axis. A set of three gimbals, one mounted on the other with orthogonal pivot axes, may be used to allow an object mounted on the innermost gimbal to remain independent of the rotation of its support (e.g. vertical in the first animation). For example, on a ship, the gyroscopes, shipboard compasses, stoves, and even drink holders typically use gimbals to keep them upright with respect to the horizon despite the ship's pitching and rolling. The gimbal suspension used for mounting compasses and the"
"clamp was invented by Hans Oetiker in Horgen, Switzerland, which eliminates steps or gaps on the inner circumference of the clamp. This is said to provide uniform compression and a 360° seal. Such stepless clamps are claimed to be well suited to applications involving thin-walled hoses, supposedly with higher retained loads. This suggests they should be considered for difficult to seal applications such as molded plastics or other less malleable materials, commonly used in the automotive industry. Many other methods can be used to attach hoses or tubing, such as compression fittings (where a nylon or soft metal ferrule is"